Construct two segments of lengths $4.3 \mathrm{cm}$ and $3.2 \mathrm{cm}$. Construct a segment whose length is equal to the sum of the lengths of these segments.

Draw a line $l$. Take a point $A$, not lying on $l.$ Draw a line m such that $m$ is perpendicular to $l$ and passing through $A$. Using ruler and a set-square.

Draw a line $l$. Take a point $A$, not lying on $l.$ Draw a line m such that $m$ is perpendicular to $l$ and passing through $A$. Using ruler and compasses.

Draw a line $AB$ and take two points $C$ and $E$ on opposite sides of $AB$. Through $C$, draw $CD \perp AB$ and through $E$ draw $EF \perp AB$.

Using ruler and set-squares.

Draw a line $AB$ and take two points $C$ and $E$ on opposite sides of $AB$. Through $C$, draw $CD \perp AB$ and through $E$ draw $EF \perp AB$. Using ruler and compass